Note on a Small Chlamyphoridae (Xenarthra, Cingulata) from the Amazon, Brazil

A small Cingulata femur from the Awa-Guaja refuse-area excavations in northwestern Maranhao, Brazil, is smaller than Euphractus sexcinctus and cannot be reliably placed beyond Chlamyphoridae.

• Why it matters: The Guaja Ethnographic Collection contains animal remains that need updated taxonomic interpretation, but an earlier species assignment may not match the specimen’s morphology and size.
• What they did: The study reassessed a complete right femur using comparative morphological and metric analyses against scientific collection specimens and specialized literature.
• The result: The femur shows a mix of features resembling Chaetophractus, Cabassous, and Euphractus, yet differences are insufficient for genus-level identification, so it was provisionally assigned to Chlamyphoridae.

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